So psycho Chauvin's charge has been moved up from 3rd degree to 2nd degree murder. Main difference being that to proof 2nd degree murder, you have to prove there was an intent to actually kill, instead of someone just not giving a fuck about human life.
Good luck with that, they've made their work a billion times harder (and less likely to be succesful) by doing so. He might have intended to kill him, but that's as good as impossible to prove without several statements from other people about him. Acting without specific intent to go and kill someone, but with total disregard of human life, resulting in death (3rd degree) is the thing that is rather obvious.